How to gunzip these files for users

I have some five files that I want to zip and attach to an email for
sending it to business users.

Can I use a run program and pass these five files through it to get them zipped? Will that work? If zipped, and mailed out, will the business users be
able to unzip these files without any issues?
because I wonder if they are zipped using gzip in Ab Initio environment,
will it be possible to gunzip or unzip it on non Ab Initio applications,
like MS Excel that users use?

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If the recipients have a program on their machine which can decompress
the file, then yes, this will work well.

This is easily tested by using the program on the source system (zip,
gzip, 7zip, etc.) to compress a few files into an archive. Transfer
the file in binary mode to a target machine and use the program it has
to decompress the archive. No need to write a graph to do this.